Melissa Heitzenrater, PA-C
NPI 1780340422ActiveIndividual· Physician Assistant, Medical· Greenville, PA
Physician Assistant, Medical (PA-C) with Oncology Hematology Association Inc, practicing in Greenville, Pennsylvania. Their prescriptions cost Medicare Part D more than their services did: $1,533,013 for 640 claims, against $11,003 paid for services in 2024. Lilly USA, LLC reported $106.57 in payments in 2025, mostly education. Lists Upmc Horizon and 1 other hospital as hospital affiliations.
Overview
| NPI | 1780340422 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | PA-C |
| Sole proprietor | No |
| NPI issued | Nov 16, 2021 |
| Last updated in NPPES | Feb 24, 2025 |
| Certified by provider | Feb 24, 2025 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Physician Assistant, Medical Primary | 363AM0700X | MA062358 | PA |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Nov 10, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 11, 2026 | No match | — |
| New York OMIG · Nov 11, 2026 | No match | — |
| Ohio Medicaid · Nov 11, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 11, 2026 | No match | — |
| Washington HCA · Nov 11, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Physician Assistant (PA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 141 |
|---|---|
| Services billed | 234 across 5 procedure codes |
| Paid by Medicare | $11,003 |
Part D prescriptions in 2024
| Prescriptions (claims) | 640 · 966 30-day fills |
|---|---|
| Patients | 136 |
| Total drug cost | $1,533,013 |
| Generic share | 84% of claims |
Education and affiliations
| Graduation year | 2020 |
|---|---|
| Medicare specialty | Physician Assistant |
Medical group
- Oncology Hematology Association IncPittsburgh, PA · 202 clinicians
Hospital affiliations
- Upmc HorizonGreenville, PA
- Upmc JamesonNew Castle, PA
Industry payments (Open Payments)
- 2025$106.57 · 1 payment from 1 company
- 2024$79.81 · 1 payment from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Lilly USA, LLC | $106.57 | 1 |
What the 2025 payments were for
- Education$106.57 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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